gfe-relnote: Move headers streams out of static stream map. Protected by
gfe_reloadable_quic_eliminate_static_stream_map.

Following up this CL, crypto stream will be moved out of static_stream_map too.

PiperOrigin-RevId: 244429772
Change-Id: I5186bc7ab4e6ee9c9f546a3c9456be489a4ddc26
diff --git a/quic/core/quic_stream.h b/quic/core/quic_stream.h
index 40bed1c..0cacbe3 100644
--- a/quic/core/quic_stream.h
+++ b/quic/core/quic_stream.h
@@ -343,6 +343,9 @@
   // Does not send a FIN.  May cause the stream to be closed.
   virtual void CloseWriteSide();
 
+  // Returns true if the stream is static.
+  bool is_static() const { return is_static_; }
+
  protected:
   // Sends as many bytes in the first |count| buffers of |iov| to the connection
   // as the connection will consume. If FIN is consumed, the write side is